Dust-filled galaxy from very early universe discovered

London: For the first time, astronomers have discovered a dust-filled galaxy from the very early universe. Dust plays an extremely important role in the universe - both in the formation of planets and new stars. But scientists believe that dust was not there from the beginning and the earliest galaxies had no dust, only gas.

The dust is comprised primarily of elements such as carbon, silicon, magnesium, iron and oxygen. In space, they gather in clouds of dust and gas, which form new stars, and for each generation of new stars, more elements are formed. Young stars in early galaxies emit hot ultraviolet light. The hot ultraviolet radiation heats the surrounding ice-cold dust, which then emits light in the far-infrared.